package cn.lkp.mall.order.web;

import cn.lkp.common.expection.NoStockException;
import cn.lkp.mall.order.entity.OrderEntity;
import cn.lkp.mall.order.service.OrderService;
import cn.lkp.mall.order.vo.OrderConfirmVo;
import cn.lkp.mall.order.vo.OrderSubmitVo;
import cn.lkp.mall.order.vo.SubmitOrderResponseVo;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpServletRequest;
import java.util.Date;
import java.util.UUID;
import java.util.concurrent.ExecutionException;
@Slf4j
@Controller
public class OrderWebController {
    @Autowired
    OrderService orderService;
    @Autowired
    private RabbitTemplate rabbitTemplate;
    /**
     * 测试页面能否访问
     * @param page
     * @return
     */
    @GetMapping("/{page}.html")
    public String page(@PathVariable("page") String page){
        return page;
    }
    @ResponseBody
    @GetMapping(value = "/test/createOrder")
    public String createOrderTest() {

        //订单下单成功
        OrderEntity orderEntity = new OrderEntity();
        orderEntity.setOrderSn(UUID.randomUUID().toString());
        orderEntity.setModifyTime(new Date());

        //给MQ发送消息
        rabbitTemplate.convertAndSend("order-event-exchange","order.create.order",orderEntity);

        return "ok";
    }
    /**
     * 去结算确认页
     * @param model
     * @param request
     * @return
     */
    @GetMapping("/toTrade")
    public String toTrade(Model model, HttpServletRequest request) throws ExecutionException, InterruptedException {
        OrderConfirmVo confirmVo = orderService.toTrade();
        model.addAttribute("confirmOrderData",confirmVo);
        return "confirm";
    }
    @PostMapping("/submitOrder")
    public String submitOrder(OrderSubmitVo vo,
                              Model model,
                              RedirectAttributes attributes){
        try{
            SubmitOrderResponseVo responseVo = orderService.submitOrder(vo);
            //下单成功来到支付选择页
            //下单失败回到订单确认页重新确定订单信息
            if(responseVo.getCode()==0){
                //下单成功
                model.addAttribute("submitOrderResp",responseVo);
                return "pay";
            }else{
                String msg = "下单失败";
                switch (responseVo.getCode()){
                    case 1: msg +="令牌验证失败，请刷新再次提交";break;
                    case 2: msg +="订单商品价格发生变化，请确认后再次提交";break;
                    case 3: msg +="库存锁定失败，商品库存不足"; break;
                }
                attributes.addFlashAttribute("msg",msg);
                return "redirect:http://order.mall.com/toTrade";
            }
        }catch(Exception e){
            if(e instanceof NoStockException){
                String message = ((NoStockException)e).getMessage();
                attributes.addFlashAttribute("msg",message);
            }
            return "redirect:http://order.mall.com/toTrade";
        }
    }
}
